Collectivization in the Polish People's Republic
The Polish People's Republic pursued a policy of agricultural collectivization throughout the Stalinist regime period, from 1948 until the liberalization during Gomułka's thaw of 1956. However, Poland was the unique country in the Eastern Bloc where large-scale collectivization failed to take root.
Source: Wikipedia — Collectivization in the Polish People's Republic (CC BY-SA 4.0)